pixmap-handle

Arguments:
pixmap

Returns the handle to the device-dependent bitmap for the main (not
mask) texture of the argument pixmap, if it has
been given one by calling open-pixmap-handle, and otherwise
returns nil. This function is useful for
determining whether the pixmap currently has such a handle, though the
particular handle is not useful for Common Graphics code. This handle
corresponds to the main texture stored in the texture property of the pixmap; see
mask-handle for
the handle corresponding to the mask texture.